<template>
    <div class="login_container">
        <div class="login_box">
            <!--登陆组件中上部分的头像-->
            <div class="avatar_box">
                <img src="../assets/logo.png" alt="">
            </div>

            <!--登陆表单-->
            <el-form :rules="loginFromRules" ref="loginFromRef"  :model="loginFrom" label-width="0px" class="login_from">
                <el-form-item prop="username">
                    <el-input v-model="loginFrom.username" prefix-icon="el-icon-user-solid"></el-input>
                </el-form-item>
                <el-form-item prop="password">
                    <el-input type="password" v-model="loginFrom.password" prefix-icon="el-icon-s-goods" @keyup.enter.native="login"></el-input>
                </el-form-item>
                <el-form-item class="btns">
                    <el-button type="primary" @click="login">登陆</el-button>
                    <el-button type="info" @click="resetClick">重置</el-button>
                </el-form-item>
            </el-form>     
        </div>
    </div>
</template>

<script>
//方法
import {doLogin} from '../request/login'
export default {
    name: 'Login',
    components: {

    },
    data() {
        return {
            //登陆表单数据绑定对象
            loginFrom:{  
                username:'',
                password:''
            },
            //表单验证规则对象
            loginFromRules:{
                username:[
                    { required: true, message: '请输入账号', trigger: 'blur' },
                    { min: 3, max: 10, message: '账号长度在 3 到 10 个字符', trigger: 'blur' }
                ],
                password:[
                    { required: true, message: '请输入密码', trigger: 'blur' },
                    { min: 6, max: 15, message: '密码长度在 6 到 15 个字符', trigger: 'blur' }
                ]
            }
        }
    },
    computed: {

    },
    created() {

    },
    mounted() {
       
    },
    methods: {
        login(){
            this.$refs.loginFromRef.validate(valid=>{
                if(valid){
                    doLogin(this.loginFrom)
                    .then(res=>{
                        if(res.meta.status==200){
                            /*1.dde登陆成功后将token保存到客户端的sessionStroage
                                1.1形目中除了登陆之外其他api接口都需要登陆后才能访问
                                1.2token旨在当前网站打开期间生效，所以将token保存在sessionStroage
                            2. 通过代码编程式跳转到后台主页  /home
                            */
                            console.log(res)
                            this.$message.success('登录成功')
                            window.sessionStorage.setItem('token',res.data.token)
                            this.$router.push('/home')
                        }else{
                            //登陆失败
                            this.$message.error('登录失败！')
                        }
                    })
                }
                
            })
        },
        resetClick(){
            this.$refs.loginFromRef.resetFields()
        }
    }
}
</script>

<style lang="less" scoped>
.login_container{
    background-color: #2b4b6b;
    height: 100%;
    
}
.login_box{
    width: 450px;
    height: 300px;
    background-color: #fff;
    border-radius: 3px;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
    .avatar_box{
        height: 130px;
        width: 130px;
        border: 1px solid #eee;
        border-radius: 50%;
        padding: 10px;
        box-shadow: 0 0 10px #ddd;
        position: absolute;
        left: 50%;
        transform: translate(-50%,-50%);
        background-color: #fff;
        img{
            width: 100%;
            height: 100%;
            border-radius: 50%;
            background-color: #eee;
        }
    }
}
.login_from{
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 0 20px;
    box-sizing: border-box;
}
.btns{  
    /*利用flex布局让按钮向右对齐*/ 
    display: flex;
    justify-content: flex-end;
}
</style>
